<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
<!--<button id="btn">返回</button>-->

<script>
    window.onload = () => {
        //let btn = document.getElementById("btn")
        //btn.onclick = ()=>{
        //    window.android.backCall();
        //}
        window.android.backCall();
    }


</script>
</body>
</html>
